@joefromchicago,
I'm currently reading another of his books,
The New Testament, A Historical Introduction to the Early Christian Writings which is written and used as a text book for a Religious Studies class at Yale online.
There's also a companion book to
Lost Christianities called
Lost Scriptures. I read them a few years ago and liked having the companion book as I read
Lost Christianities.
I'm also reading a couple of John Dominic Crossan's books,
The Birth of Christianity and
Jesus, A Revolutionary Biography
Crossan (who still considers himself a Catholic, albeit a non-traditional one) takes less of a turn away from Christianity than does Ehrman.